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Ecology Of Central Washington Semi-Arid Lands A Documentary Film, Phillip Robert Debusschere

All Master's Theses

Contrasting vegetation patterns on the west side versus the east side of Washington's Cascade Mountains, due primarily to precipitation distribution, are documented on 16mm sound color film with primary emphasis upon the driest vegetation zone of eastern Washington. Interrelationships of climate, soils, vegetation patterns and animal life are shown for climax types of vegetation and those areas since altered to new habitats due to cultivation, water impoundment, fire and grazing. Emphasis is upon the importance of baseline studies of these semi-arid land habitats.

A Comparison Of Two Artificial Substrates In The Determination Of Net Primary Production, Leland C. Faulconer

All Master's Theses

This study was to determine if a significant difference exists between two types of artificial substrates used to measure the growth rate of periphyton in a warm spring. Chlorophyll was used as an indirect measure of biomass in comparing the substrates and estimating net primary production. A semi-quantitative algal survey was done for each of the sites sampled.

The study was carried out for one year and it was demonstrated that there was a statistically significant difference between the two substrates.

Immunodeficiency Diseases And Tumor Immunobiology, Rene J. Duquesnoy, Peter A. Abramoff

Biological Sciences Faculty Research and Publications

No abstract provided.

A Taxonomic And Distributional Survey Of The Benthic Blue-Green Algal Flora Of The Skokomish River Estuary, Louis J. Boitano

All Master's Theses

This paper presents a taxonomic and distributional survey of the benthic blue-green algal flora within an estuary system. Physical parameters were considered in the seasonal growth and distribution of algal species. A majority of the observed species occur in all habitats of the estuary and are present throughout the year. Seasonal growth rates and distribution are primarily dependent upon light intensity, temperature, salinity, and substrate condition. The largest extent of growth and distribution occurs in the late spring and summer months at which time the abiotic factors are most favorable for the development of benthic algal communities.

Las Increíbles Arañas Acuáticas, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

"African Catalog" And Notes, Hal L. Black

Division of Mammals - Field Notes and Catalogs

No abstract provided.

Fitness Theory And Aspects Of Behavioral Ecology In Two Sympatric Pacurus Species At Dillon Beach, California : Decapoda, Anomura), John Erickson Warner

University of the Pacific Theses and Dissertations

In the present study, aspects of the behavior and ecology of two sympathetic intertidal hermit crabs, Pagurus hirsutiusculus and Pagurus samuelis were studied with the intention of expanding the use of fitness set analysis to other species, particularly extending studies over the entire breeding season.

A Diurnal Zooplankton Migration Study In Lake Mead, Robert D. Staker

Publications (WR)

The diurnal vertical movement of zooplankton was first recorded in freshwater lakes by Weismann (1877) in Lake Constance (Bodensee), although Cuvier was credited with observing the migration of Daphniae in 1817 (Gushing, 1955). The migration is best observed in deep oligotrophic lakes and migrations of 50 m per day are described (Worthington, 1931). In addition, two species of chaetognaths are reported to migrate 400 m a day in marine waters off of Lisbon (Waterman and Berry, 1967) while Birge (1895) found little evidence of the phenomenon at all in Lake Mendota, Wisconsin. Most zooplankton that migrate rise at night and …

Parasites Of Fishes From The San Joaquin Delta, Gary Herndon Hensley

University of the Pacific Theses and Dissertations

The purpose of the present study was to extend previous parasitological investigations of the San Joaquin area fishes. This study did not deal with a specific group of fish or parasite, but rather all groups of fishes and parasites encountered. As the amount of work done in California has not been extensive, more research will contribute to our understanding of these fishes and their parasites.

Population Ecology Of The Littoral Fringe Gastropod Littorina Planaxis In Northern California, Russell James Schmitt

University of the Pacific Theses and Dissertations

Life history patterns of individual organisms are the result of natural selection and should be correlated with particular physical and biological characteristics of habitats in which they live. The littoral fringe is known to be the most severe physical habitat in the intertidal zone, and it is expected that organisms in it should have population characteristics associated with selective response to physical adversity rather than biological interaction. Ecological studies of populations of Littorina planaxis were made in the Dillon Beach and Bodega Head areas. The study localities differed principally in extent of wave exposure rather than geographical location.

A Quantitative Study Of The Water Quality And Plankton Of Upper Blue Lake, Lower Blue Lake, And The Oaks Arm Of Clear Lake In Lake County, California, Stephen Patrick Hayes

University of the Pacific Theses and Dissertations

This study was undertaken to examine any possible associations between the measurements of water quality and lake conditions, and the quantity and composition of plankton present in Upper Blue Lake, Lower Blue Lake, and the Oaks Arm of Clear Lake during the sampling period. A secondary objective of this study was to provide a record of these measurements. These measurements, when taken collectively, are important indicators of the trophic state or nutrient condition of the waters of the three lakes from February through October 1972.

Flowering Plants Of Omega Mine, Table Mountain, Tuolumne County, California, Mary Wilcox

University of the Pacific Theses and Dissertations

The flora of California has been studied as a whole, but with the exception of Yosemite Valley few specific areas in Tuolumne County have been investigated.

The area chosen for this investigation was approximately forty acres of the lava flow known as Table Mountain. This forty acres is located in the southeast portion of the Omega Mine near Rawhide Flat, Tuolumne County, California. The decision to use this area for study was based on its relative freedom from man's influence and its accessibility. The Omega Vine belongs to the author and its use was restricted during the period of investigation

Ketoaldehydes And Glyoxalase Type Enzymes In The Life Cycle Of Panagrellus Silusiae, Caroline Gardiner

Master's Theses

No abstract provided.

Regeneration In Zebrafish, Brachydanio Rerio, Gabriel J. Ekandem

Master's Theses

No abstract provided.

Physiological And Behavior Studies Of Thelepus Crispus And Its Commensal Halosydna Brevisetosa, John B. Morgan

Dissertations and Theses

Chemical, physical and physiological interactions between the marine commensal scaleworm Halosydna brevisetosa Kinberg and its terebellid host, Thelepus crispus Johnson were investigated. In an experiment designed to test for chemical attraction between the host and commensal, Halosydna were unable to identify the arm in a U-tube choice apparatus leading to the host. In 50 trials, 54% of the commensals crawled into the flow of water from their hosts. Other observations showed that Halosydna made contact with the host by random encounter. After contact, commensals followed tentacles down into the host’s tube and took up a characteristic position along the dorsum …

Trap Biases And Weather Parameters Influencing Mosquito Collecting And Activity, Virgil Roy Acuff

Dissertations and Theses @ UNI

During the summer of 1972, eighteen species of mosquitoes were collected in Black Hawk Park, Cedar Falls, Iowa, using a New Jersey light trap, a Communicable Disease Center (CDC) miniature light trap baited with dry ice, an unbaited Malaise trap and a biting collection. Collections were made concurrently with the dual purpose of investigating trap biases for various species of mosquitoes captured and analyzing the effects of temperature, rainfall, relative humidity, barometric pressure, light intensity, and moonphase on the flight activity of female Aedes vexans (Meigen). The New Jersey light trap and the CDC miniature light trap baited with dry …

Germination Ecology Of Five Chihuahuan Desert Winter Annuals, Andreas George Christou

Dissertations and Theses @ UNI

Seeds of five winter annuals, Eschscholzia mexicana Greene, Eriogonum abertianum Torr. var. abertianum Torr., Eriogonum abertianum Torr. var. ruberrimum Gandoger, Eriogonum rotundifolium Benth., and Eriogonum trichopes Torr., native to the Chihuahuan Desert, were tested for their germination responses relative to constant and fluctuating temperatures, light and dark sensitivity, and innate dormancy. The effects of aqueous leachates from Larrea tridentata (DC.) Cov., on germination and initial hypocotyl growth of the above Eriogonum taxa were also investigated. Eriogonum taxa germinated at constant temperatures ranging from 6° to 20°c, although their optima were at 10° and 13°c. E. trichopes showed highest germination in …

Ultrastructure Of Inclusion Bodies In The Transitional Epithelium Of Monkey Urinary Bladder, Alan B. Weckerling

Theses & Dissertations

It has been noted that hematoxylin-eosin stained surface cells in the transitional epithelium of certain animals occasionally contain acidophilic inclusion bodies. These can be observed in monkey kidney pelvis, ureter, urinary bladder, and urethra. In one species of monkey, Macaca fascicularis, the inclusion bodies are quite prevalent and apparently are not related to any pathologic or experimental condition. They are highly refractile under the light microscope, a property which often indicates structures below the resolving power of the microscope. This study was designed to explore the composition and structure of these inclusion bodies. Procedures were selected to detect the presence …

Comparative Renal Efficiencies In Five Species Of Peromyscus, Kenneth W. Andersen

Biology ETDs

Renal efficiencies were determined in five species of Peromyscus: P. maniculatus rufinus, P. leucopus tornillio, P. boylii rowleyi, P. difficilis nasutus, and P. t. truei. The animals were treated at three levels of drinking water availability: ad libitum, one-half ad libitum, and deprivation. At each regimen urine osmolality, urine urea concentration, plasma concentration, urine volume, and animal weight were determined. Effects of the water stresses on these parameters are discussed.

During the most stressful regimen (water deprivation) P.maniculatus, P. leucopus and P.boylii had averageurine concentrations of 3950, 4100, and 4100 mOsmols/ kg H2o respectively. Average concentrations for P.difficilis and P. …

Separation Of The Membrane Associated L-Malate And Reduced Nicotinamide Adenine Dinucleotide Dehydrogenases Of Micrococcus Lysodeikticus, Steven S. Dills

Masters Theses

No abstract provided.

Relationships Between Radiophosphorus Accumulation By Bacteria, Algae, And Tubificid Worms In Laboratory Food Chains, Warren L. Stromberg

Masters Theses

No abstract provided.

The Effect Of Thermoradiation On Bacterial Spores In Wet And Dry Systems, Thomas J. David

Biology ETDs

Spores of Bacillus subtilis var. niger and Clostridium sporogenes were exposed to heat and radiation, separately, and in simultaneous combination. The spores were subjected to treatment under two sets of conditions. Wet spores were suspended in water during treatment, while spores in the dry state were treated in air which had a relative humidity of about 30% at room temperature. Treatment with ionizing radiation at room temperature was found to be more effective in the dry than the wet state, in contrast to most theories and some research in that area. Bacillus subtilis var. niger was more resistant to heat …

Lead Content Of Hair Of Urban And Rural Populations Of Small Mammals, Richard Brian Raymond

Dissertations and Theses

Hair from small mammals of roadside, urban parkland, wilderness, and antique populations was analyzed for lead by atomic absorption spectrophotometry. Hair from roadside populations had a significantly greater amount of lead than hair from the ether groups. Hair from antique populations did not differ in lead content from that of current populations which are removed from immediate exposure to automotive exhausts.

An Investigation Of The Melanistic Phase Of The Western Fox Squirrel (Sciurus Niger Rufiventer) In Eastern Nebraska And Western Iowa, Edward W. Lueninghoener

Student Work

The largest member of the tree dwelling North American squirrels is the Fox Squirrel (Sciurus niger Linnaeus). This species inhabits the eastern half of the contiguous United States. Its normal habitat is open woodland though the Fox Squirrel along with the Grey Squirrel (Sciurus carolinensis Linnaeus) may be found in some thickly wooded areas. The Fox Squirrel has extended its range farther west in response to the large number of trees that have been planted on the former prairie of the great plains (Yeager, 1959). The range of the Fox Squirrel is plotted in Appendix I, Figure 1 after Hal …

Life History Consequences Of Natural Selection: Coles Result Revisited', Eric Charnov, William Schaffer

Biology Faculty & Staff Publications

No abstract provided.

The Effects Of Atropine On The Growth And Respiration Of Two Species Of Bacteria Normally Inhabiting The Human Gastro-Intestinal System, Mary M. Ramos

Theses & Dissertations

It is the purpose of this study to determine whether the drug atropine has an effect on bacteria found normally inhabiting the human body, most specifically the gastrointestinal system. Atropine is one of the oldest drugs in medicine. It is derived from the roots and leaves of solanaceous plants such as henbane and Jimson weed. Atropine is often termed a belladonna alkaloid because it can also be found in the deadly nightshade plant, Atropa belladonna. Atropine is a highly competitive antagonist of acetylcholine at receptor sites in smooth muscles, cardiac muscle, and various glandular cells (5). Therefore, its effects are …

A Comparison Of Vegetation Structure And Composition In Modified And Natural Chaparral, John A. Rosario

Loma Linda University Electronic Theses, Dissertations & Projects

Type conversion of a 12 acre plot of chamise chaparral to grassland in the Mud Flat region of the San Bernardino National Forest, San Gorgonio District, California, was completed in 1967.

The conversion was accomplished following standard type conversion techniques for chaparral in California and included retention of a mosaic pattern of islands of the original chaparral for the purpose of improving scenic quality and maximizing edge effect. The islands constituted approximately 9 per cent of the total 12 acres and averaged 3800 square feet per island with an average distance measurement between islands of 96 feet.

Brush removal by …

Characteristics Of Arginase From The Terebellid Polychaete Pista Pacifica Berkeley, Karen Laurel O'Malley

Dissertations and Theses

Arginase has been found to occur in the tentacles, gut, and body wall of Pista pacifica Berkeley. Partially purified arginase from the intestine has a molecular weight of 200,000, a Km of about 155 mM, an arginase/canavanase ratio of 22, a pH optimum of 10.5, and a temperature optimum of 60°C. In addition, P. pacifica arginase is competitively inhibited by ornithine but is not inhibited by high arginine concentrations, nor by sulfhydryl reagents. The enzyme is not stimulated by exogenous manganese and breaks down into an active subunit under harsh treatment. The subunit has a Km of about 118 mM …

A Study Of The Enteric Bacterial Population Of The Rio Grande Between Isleta Pueblo And Bernardo, New Mexico, Gary Lee Stetler

Biology ETDs

A bacterial study of the water of the Rio Grande was conducted over a period of one year (1971-1972) to determine if Salmonella were present and to enumerate fecal coliforms and fecal streptococci. Water samples were collected from five sites in the Rio Grande between Isleta Pueblo and Bernardo, New Mexico. Of 80 river samples, 19 (23.8%) were found to contain Salmonella. A total of 16 serotypes of Salmonella enteritidis were isolated. Salmonella were most frequently isolated in July, August, and September. A seasonal pattern was observed in which the numbers of fecal coliforms and fecal streptococci, and Salmonella isolations …

Growth Of Selenastrum Capricornutum Printz In Natural Waters Treated With Copper Sulfate, Gerald Eugene Schulz

Dissertations and Theses

The green alga, Selenastrum capricornutum Printz, was used in an algal bioassay to determine the toxic properties of copper in various natural lake waters of Oregon. Lake water was collected and brought back to the laboratory where it was treated with various copper concentrations and inoculated with a cell suspension of the test alga. Growth of the alga was determined by direct cell counts. The copper ion activity, pH, and absorbance of the test cultures were also determined. The growth of the alga was found to depend upon the water tested and also upon the copper concentration used.